/*
 *  jQuery table2excel - v1.0.2
 *  jQuery plugin to export an .xls file in browser from an HTML table
 *  https://github.com/rainabba/jquery-table2excel
 *
 *  Made by rainabba
 *  Under MIT License
 */
//table2excel.js
;(function ($, window, document, undefined) {
    var pluginName = "table2excel",
        defaults = {
            exclude: ".noExl",
            name: "Table2Excel"
        };

    // The actual plugin constructor
    function Plugin(element, options) {
        this.element = element;
        // jQuery has an extend method which merges the contents of two or
        // more objects, storing the result in the first object. The first object
        // is generally empty as we don't want to alter the default options for
        // future instances of the plugin
        //
        this.settings = $.extend({}, defaults, options);
        this._defaults = defaults;
        this._name = pluginName;
        this.title = $(".ui-jqgrid-htable");
        this.init();
    }

    Plugin.prototype = {
        init: function () {
            var e = this;

            e.template = {
                head: "<html xmlns:o=\"urn:schemas-microsoft-com:office:office\" xmlns:x=\"urn:schemas-microsoft-com:office:excel\" xmlns=\"http://www.w3.org/TR/REC-html40\"><head><meta charset=\"UTF-8\"><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets>",
                sheet: {
                    head: "<x:ExcelWorksheet><x:Name>",
                    tail: "</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet>"
                },
                mid: "</x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body>",
                table: {
                    head: "<table>",
                    tail: "</table>"
                },
                foot: "</body></html>"
            };

            e.tableRows = [];

            //get title
            $(e.title[0]).each(function (i, o) {
                var tempRows = "";
                $(o).find("tr").not(e.settings.exclude).each(function (i, o) {
                    tempRows += "<tr>" + $(o).html() + "</tr>";
                });
                e.tableRows.push(tempRows);
            });

            // get contents of table except for exclude
            $(e.element).each(function (i, o) {
                var tempRows = "";
                $(o).find("tr").not(e.settings.exclude).each(function (i, o) {
                    tempRows += "<tr>" + $(o).html() + "</tr>";
                });
                e.tableRows.push(tempRows);
            });

            // exclude img tags
            if (e.settings.exclude_img) {
                e.tableRows[0] = exclude_img(e.tableRows[0]);
            }

            // exclude link tags
            if (e.settings.exclude_links) {
                e.tableRows[0] = exclude_links(e.tableRows[0]);
            }

            // exclude input tags
            if (e.settings.exclude_inputs) {
                e.tableRows[0] = exclude_inputs(e.tableRows[0])
            }

            e.tableToExcel(e.tableRows, e.settings.name);
        },

        tableToExcel: function (table, name) {
            var e = this, fullTemplate = "", i, link, a;

            e.uri = "data:application/vnd.ms-excel;base64,";
            e.base64 = function (s) {
                return window.btoa(unescape(encodeURIComponent(s)));
            };
            e.format = function (s, c) {
                return s.replace(/{(\w+)}/g, function (m, p) {
                    return c[p];
                });
            };
            e.ctx = {
                worksheet: name || "Worksheet",
                table: table
            };

            fullTemplate = e.template.head;

            if ($.isArray(table)) {
                for (i in table) {
                    //fullTemplate += e.template.sheet.head + "{worksheet" + i + "}" + e.template.sheet.tail;
                    fullTemplate += e.template.sheet.head + "Table" + i + "" + e.template.sheet.tail;
                }
            }

            fullTemplate += e.template.mid;

            if ($.isArray(table)) {
                for (i in table) {
                    fullTemplate += e.template.table.head + "{table" + i + "}" + e.template.table.tail;
                }
            }

            fullTemplate += e.template.foot;

            for (i in table) {
                e.ctx["table" + i] = table[i];
            }
            delete e.ctx.table;


            if (typeof msie !== "undefined" && msie > 0 || !!navigator.userAgent.match(/Trident.*rv\:11\./))      // If Internet Explorer
            {
                if (typeof Blob !== "undefined") {
                    //use blobs if we can
                    fullTemplate = [fullTemplate];
                    //convert to array
                    var blob1 = new Blob(fullTemplate, {type: "text/html"});
                    window.navigator.msSaveBlob(blob1, getFileName(e.settings));
                } else {
                    //otherwise use the iframe and save
                    //requires a blank iframe on page called txtArea1
                    txtArea1.document.open("text/html", "replace");
                    txtArea1.document.write(fullTemplate);
                    txtArea1.document.close();
                    txtArea1.focus();
                    sa = txtArea1.document.execCommand("SaveAs", true, getFileName(e.settings));
                }

            } else {
                link = e.uri + e.base64(e.format(fullTemplate, e.ctx));
                a = document.createElement("a");
                a.download = getFileName(e.settings);
                a.href = link;
                a.click();
            }

            return true;

        }
    };

    function getFileName(settings) {
        return (settings.filename ? settings.filename : "table2excel") + ".xls";
    }

    // Removes all img tags
    function exclude_img(string) {
        return string.replace(/<img[^>]*>/gi, "");
    }

    // Removes all link tags
    function exclude_links(string) {
        return string.replace(/<A[^>]*>|<\/A>/g, "");
    }

    // Removes input params
    function exclude_inputs(string) {
        return string.replace(/<input[^>]*>|<\/input>/gi, "");
    }

    $.fn[pluginName] = function (options) {
        var e = this;
        e.each(function () {
            if (!$.data(e, "plugin_" + pluginName)) {
                $.data(e, "plugin_" + pluginName, new Plugin(this, options));
            }
        });

        // chain jQuery functions
        return e;
    };

})(jQuery, window, document);
